[Al Skierkiewicz]

Originally Posted by magnasmific

Hey all.

I'm working on a test fixture here at work (im in R&D) and we need a light sensor to determine the position of a door.
-Alex

Alex,
Are you trying to just determine two positions i.e. opened and closed? Are you trying to determine absolute position? Each of these will need different devices. The Banner sensor line has several devices that are used as proximity sensors that would work well for open and closed. Depending on your application, rangefinding might be a better way to go if the distance is greater than a few feet. Digikey has a large variety that may not stand up in an industrial environment without other enclosures. McMaster Carr has a variety of devices that are designed for use on production lines that may be more suitable.